.TH lprng_certs 1 2006-12-09 "LPRng" "lprng_certs command"
.SH NAME
lprng_certs \- lprng SSL certificate management
.SH SYNOPSIS
.B
.nf
lprng_certs option
 Options:
  init     - make directory structure
  newca    - make new root CA
  defaults - set new default values for certs
  gen      - generate user, server, or signing cert
  index [dir] - index cert files
  verify [cert] - verify cert file
  encrypt keyfile
           - set or change keyfile password
.nf
.SH DESCRIPTION
.PP
The
.B lprng_certs
program is used to manage SSL certificates for the LPRng software.
There SSL certificate structure consists of a hierarchy of
certificates.
The LPRng software assumes that the following types of certificates
will be used:
.IP "CA or root"
A top level or self-signed certificate.
.IP "signing"
A certificate that can be used to sign other certificates.
This is signed by the root CA or another signing certificate.
.IP "user"
A certificate used by a user to identify themselves to the
lpd server.
.IP "server"
A certificate used by the
.I lpd
server to identify themselves to the
user or other
.I lpd
servers.
.SH "Signing Certificates"
.PP
All of the signing certificates,
including the root certificate (root CA),
/etc/lprng/ssl.ca/ca.crt,
are in the same directory as the root CA file.
Alternately,
all of the signing certs can be concatenated and put into a single file,
which by convention is assumed to have the same name as the root CA
file,
/etc/lprng/ssl.ca/ca.crt.
The
.BR ssl_ca_file ,
.BR ssl_ca_path ,
and
.BR ssl_ca_key
printcap and configuration options can be used to specify
the locations of the root CA files,
a directory containing the signing certificate files,
and the private key file for the root CA file respectively.
.PP
The root certificate (root CA file)
/etc/lprng/ssl.ca/ca.crt
has a private key file
/etc/lprng/ssl.ca/ca.key
as well.
By convention,
the private keys for the other signing certificate files are stored in the
certificate file.
.PP
The OpenSSL software requires that this directory
also contain a set of hash files which are,
in effect,
links to these files.
.PP
By default, all signing certificates are assumed to be
in the same directory as the root certificate.
.SH "Server Certificates"
.PP
The certificate used by the
.I lpd
server are kept in another
directory.
These files do not need to have hash links to them.
By convention,
the private keys for these certificate files are stored in the
certificate file.
The server certificate file
is specified by the
.B ssl_server_cert
and has the default value
/etc/lprng/ssl.server/server.crt.
This file contains the cert and private key.
The server certificate password  file is specified by the
.B ssl_server_password
option with the default value

and
contains the password used to decrypt the servers private key and use it
for authentication.
This key file should be read only by the
.I lpd
server.
.SH "User Certificates"
.PP
The certificates used by users are kept in a separate directory
in the users home directory.
By convention,
the private keys for these certificate files are stored in the
certificate file.
.PP
The user certificate file is specified by the
.B LPR_SSL_FILE
environment variable,
otherwise the
.B "${HOME}/.lpr/client.crt"
is used.
The password is taken from the file specified by the
.B LPR_SSL_PASSWORD
environment variable,
otherwise the
.B "${HOME}/.lpr/client.pwd"
file is read.
.PP
.SH "USING LPRNG_CERTS" 
.PP
The organization of the SSL certificates used by LPRng is
similar to that used by other programs such as the
.B Apache
.B mod_ssl
support.
The
.B lprng_certs
program is used to create the directory structure,
create certificates for the root CA,
signing,
user and servers.
In order to make management simple,
the following support is provided.
.SH "lprng_certs init"
.PP
This command creates the directories used by the
lpd
server.
It is useful when setting up a new 
.B lpd
server.
.SH "lprng_certs newca"
.PP
This command creates a self-signed certificate,
suitable for use as a root CA certificate.
It also sets up a set of default values for other certificate creation.
.SH "lprng_certs defaults"
.PP
This command is used to modify the set of default values.
.PP
The default values are listed and should be self-explanatory,
except for the value of the
.B signer
certificate.
By default,
the root CA can be used to sign certificates.
However,
a signing certificate can be used as well.
This allows delegation of signing authority without
compromising the security of the root CA.
.SH "lprng_certs gen"
.PP
This is used to generate a user, server, or signing certificate.
.SH "lprng_certs index"
.PP
This is used to create the indexes for the signing certificates.
.SH "lprng_certs verify [cert]"
.PP
This checks the certificate file using the Openssl
.B "openssl verify"
command.
.SH "lprng_certs encrypt keyfile"
.PP
This removes all key information from the key file,
reencrypts the key information, 
and the puts the encrypted key information in the file.
.SH "LPRng OPTIONS"
.nf
.ta \w'${HOME}/.lpr/client.crt  'u
Option	Purpose
ssl_ca_path	directory holding the SSL signing certs
ssl_ca_file	file holding the root CA or all SSL signing certs
ssl_server_cert	cert file for the server
ssl_server_password	file containing password for server server
${HOME}/.lpr/client.crt	client certificate file
${HOME}/.lpr/client.pwd	client certificate private key password
.SH "ENVIRONMENT VARIABLES"
.nf
.ta \w'${HOME}/.lpr/client.crt  'u
LPR_SSL_FILE	client certificate file
LPR_SSL_PASSWORD	client certificate private key password

.SH "EXIT STATUS"
.PP
The following exit values are returned:
.TP 15
.B "zero (0)"
Successful completion.
.TP
.B "non-zero (!=0)"
An error occurred.
.SH "SEE ALSO"
.LP
lpd.conf(5),
lpc(8),
lpd(8),
checkpc(8),
lpr(1),
lpq(1),
lprm(1),
printcap(5),
lpd.conf(5),
pr(1), lprng_certs(1), lprng_index_certs(1).
.SH "AUTHOR"
Patrick Powell <papowell@lprng.com>.
.SH "HISTORY"
LPRng is a enhanced printer spooler system
with functionality similar to the Berkeley LPR software.
The LPRng developer mailing list is lprng-devel@lists.sourceforge.net;
subscribe by visiting 
.B https://lists.sourceforge.net/lists/listinfo/lprng-devel
or sending mail to 
.B lprng-request@lists.sourceforge.net
with
the word 
.I subscribe 
in the body.
.br
The software is available via 
.B http://lprng.sourceforge.net
